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<views:BasePage xmlns="http://xamarin.com/schemas/2014/forms"
                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                xmlns:views="clr-namespace:Geolocalizacion.View"
                xmlns:viewmodels="clr-namespace:Geolocalizacion.ViewModel"
                x:Class="Geolocalizacion.View.GeolocationPage"
                Title="Geolocalización">
    <views:BasePage.BindingContext>
        <viewmodels:GeolocationViewModel />
    </views:BasePage.BindingContext>

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using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using Android.App;

// General Information about an assembly is controlled through the following 
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("Geocodificacion.Android")]
[assembly: AssemblyDescription("")]

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.Geocodificacion">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="27" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-feature android:name="android.hardware.location" android:required="false" />
    <uses-feature android:name="android.hardware.location.gps" android:required="false" />
    <uses-feature android:name="android.hardware.location.network" android:required="false" />
    <application android:label="Geocodificacion.Android"></application>
</manifest>

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using System;
using System.Linq;
using System.Windows.Input;
using Xamarin.Essentials;
using Xamarin.Forms;

namespace Samples.ViewModel
{
    public class GeocodingViewModel : BaseViewModel
    {

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namespace Geocodificacion.View
{
    public partial class GeocodingPage : BasePage
    {
        public GeocodingPage()
        {
            InitializeComponent();
        }
    }
}

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<views:BasePage xmlns="http://xamarin.com/schemas/2014/forms"
                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                xmlns:views="clr-namespace:Geocodificacion.View"
                xmlns:viewmodels="clr-namespace:Geocodificacion.ViewModel"
                x:Class="Geocodificacion.View.GeocodingPage"
                Title="Geocoding">
    <views:BasePage.BindingContext>
        <viewmodels:GeocodingViewModel />
    </views:BasePage.BindingContext>

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using Xamarin.Essentials;

namespace Bateria.ViewModel
{
    public class BatteryViewModel : BaseViewModel
    {
        public BatteryViewModel()
        {
        }

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using Xamarin.Essentials;

namespace Bateria.ViewModel
{
    public class BatteryViewModel : BaseViewModel
    {
        public BatteryViewModel()
        {
        }

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namespace Bateria.View
{
    public partial class BatteryPage : BasePage
    {
        public BatteryPage()
        {
            InitializeComponent();
        }
    }
}

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<views:BasePage
    x:Class="Bateria.View.BatteryPage"
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:viewmodels="clr-namespace:Bateria.ViewModel"
    xmlns:views="clr-namespace:Bateria.View"
    Title="Battery">
    <views:BasePage.BindingContext>
        <viewmodels:BatteryViewModel />
    </views:BasePage.BindingContext>